Kant’s ethics is generally regarded as an ethics characterized by rational reasoning, which emphasizes that moral norms need to be established in the procedural process of practical reason based on the freedom of will. Therefore, intuitionism, which is characterized by non-reasoning and non-reflection, is often regarded as incompatible with Kant’s ethics. However, this remains to be discussed. If intuitionism is divided into two basic forms, rationalism and emotionalism, then both are contained in Kant’s moral theory. Kant explicitly or implicitly admits that intuition plays an important and even fundamental role in moral judgment, which does not really conflict with his basic position of rationalism.